Arc-lamp.



PATENTBD AUG. 2 5, 190s. L. OBNAS'EK.

ARG LAMP.

`APPLICATION FILED NOV. Z7, 1906.

LUDVIK. onNsnK, or PRAGUE, ausrnntnunetnr Specification of Letters Patent.

resented aug. 25, isos.

Application filed November 2, 1906. Serial No. 345,371.

To allwhom 'it may concern:

.Be it known that I, LUDVIK OENSEK, electrician, subject of the Emperor of Austa-Hungary, residing at Prague, in the Kingdom of Bohemia, Empire of vAustria- Hungary, have invented new and useful lmprovements in Arc-Lamps, of which the folowing isa speciiication. i In the arc lamp which forms the object of the plresent invention two' carbons one of Whic may be moved away from the other to produce the ar'c are 'arranged side by'side and adapted. to be simultaneously raised' or lowered and aresupported by a pin which burns ormelts away in the arc. An arrangement is provided whereby the Weight of the carrier 'holds the movable pin `pressed against the' carbons 'near their burning ends,

so that, if the pin should-melt, thecarbons will descend and their movement will be transmitted to'the pin, so that the latter is again caused to engage said pin. lt is evi dent, that by a normal operation of the arc lamp andby the choice of pins of suitable crosssection the descending of the carbons is scarcely perceptible.

The arc lampis shown in the accompanyjing drawing, in which 'Figure 1 is an elevation, 2 a section on the line x-x of Fig. `1 the supporting -nlechanism .for the carbons being omitted, Figs. 3 and'4, a plan -view and side view respectively of a detail 3 and Fig. 5 another form of construction ofthe lamp. Fig. 6 is an elevation of Fig. 5.

The carbon holders c, d are mounted on a late b sliding along bars c. older d is mounted on a hinge e and provvided with an armature f. This faces the cor'e of the electro-magnet g and has for its object to bring the ends of the carbons into contact in the non-working position and to separate the ends to strike the arc.

, The cai-bons 7i and i which rest against one another in a positi/ontrepose are supported by a pin c inserted in a sheath Z. On this sheath a rack-bar m is mounted, which projects into the slot 'n of ahollow cylinder c Which'serves as guidefor the sheath Z. The hollowcylinder is as shown in the present ex am le of construction made in one piece wi th a p ate p connecting the lower ends of the bars t a. The rack-bar m gears/with a pinion gg, en

The carbon theaXis of which a cord pulley r is mounted, which is connected by means of a cord s carriedover a roller t with a ring u attached to the plate t. The cord s is passed in such a way round the rollers r, t, that the Weight or the plate t and fittings and the carbons h and t' presses the pink against the carbons. ln order that the arc may strike downwards and not draw upwards between the two carbons, an electromagnet c is provided, the pole .e of which lies in. proximity to the arc.

The current passes through the conductor l into the carbon h and through the carbon i and conductor 2 to the electrcmagnet c and 'from the latter through the conductor 3 and electromagnet g to the return wire Li.

As already mentioned the ends of the carbons h, t lie, when in the non-working position, against one another. Now if current be passed through the lamp the armature f is attracted. The carbon ends are thereby separated and the arc produced. Nhen the carbons are consumed to the pin 7c a portion oit the latter melts or vaporizes oil'. The

carbons are no longer supported thereby and accordingly descend. The downward movement of the plate I) is, however, again transn itted to the pin lc, which is moved 'forward ti be pressed against the carbons supporting thereby the latter in a suitable distance from their ends. l

ln the form o'i `construction shown in Fig. 5, two pins la are provided which lie between the two carbone 7i and i. 0f course instead of the cord arrangement s any other suitable n'iechanism for transmitting the movement of the plate l; to the pin 7c may be employed.

.Having now particularly described and ascertained the nature oi' my said invention andin what manner 'the same is to be performed, l declare that what l claim is:

ll. In an arc lamp the cen'ibination with the carbons, of a fusible pin supporting the carbous against downward movement and means for moving the pin into engagement with the carbone when the end of the pin is melted, said means being controlled by the downward movement of the carbons.

2. in an arc lamp the combination with.

bons to drop when its end is melted off, .In -testimony whereof have signed my l means for moving said pin and. means for acname to this specification in the presence of tueting said means by the Weight of the slidtwo subscribing witnesses. V d V1 ing plate so that as the carbons move down- I, LUDVIK OOENAbEK. 5 'Ward the pin is brought into engagement Witnesses:

therewith again by the movement of the car- ADOLPH FISCHER, bon carrying plate. ARTHUR SCHWEINBIRNG. 

